CN105813785B - Bit replacing formula rotary cutting tool - Google Patents
Bit replacing formula rotary cutting tool Download PDFInfo
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- CN105813785B CN105813785B CN201580003184.XA CN201580003184A CN105813785B CN 105813785 B CN105813785 B CN 105813785B CN 201580003184 A CN201580003184 A CN 201580003184A CN 105813785 B CN105813785 B CN 105813785B
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- cutting edge
- foregoing
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- tip
- cutting tip
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/109—Shank-type cutters, i.e. with an integral shaft with removable cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/202—Plate-like cutting inserts with special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
- B23C2200/0477—Triangular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/20—Top or side views of the cutting edge
- B23C2200/206—Cutting edges having a wave-form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/28—Arrangement of teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/60—Roughing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
It is formed with multiple grooves（27）, its each in be formed with multiple blade bearings（28）, it is configured with cutting tip to disassembly ease（30）.Cutting tip（30）With main cutting edge（34）, comer cutting edge, front cutting edge（35）, main cutting edge（34）From rake face direction, be formed as wavy.Cutting tip（30）It is configured to, in roughing tool（10）Around Pivot axle（O）During rotation, each cutting tip（30）Main cutting edge（34）In the rotational trajectory of formation, in 1 groove（27）It is inherent along Pivot axle（O）Direction on adjacent cutting tip（30）The phase of the ripple of the rotational trajectory of formation is consistent, also, at least one of cutting tip（30）It is configured to, the rotational trajectory that a part of cutting edge part is formed is each other in Pivot axle（O）Overlapped on direction.Thus, in the case that the cutting edge part is used as main cutting edge part and inner edge, it can also mitigate cutting burden and suppress damage.
Description
Technical field
The present invention relates to bit replacing formula rotary cutting tool.In more detail, it is equipped with the present invention relates to disassembly ease
The bit replacing formula rotary cutting tool of the form of the roughing tool of multiple cutting tips.
Background technology
In the past, exist on the outer peripheral face of cylindric tool body from end side towards base end side be formed with multiple grooves,
The bit replacing formula rotary cutting tool of multiple cutting tips is assembled in each groove in the upward disassembly ease of instrument rotary shaft.
Generally, the rotary cutting tool with such shape is referred to as roughing tool.In roughing tool, in instrument rotary shaft
Multiple cutting tips are arranged with upwards, so the length of substantial cutting edge is longer, cutting-in can be obtained larger.Thus,
It can realize that high efficiency is processed.
In patent document 1, a kind of quadrangle form for being equipped with and there is wavy cutting edge in side view is disclosed
The roughing tool of cutting tip.In relation of the cutting tip in 1 groove, interval is arranged in the axial direction, many
In relation between individual groove, it is configured to, in the axial direction mutual wavy cutting edge company of composition on the rotational trajectory around axis
Continuous cutting edge row.Also, recorded in patent document 1, by the way that cutting edge is done into corrugate, cutting swarf is by than cutting edge
Length thinner ground disjunction, so the raising of cutting swarf treatability can be realized.
Patent document 1：Japanese Unexamined Patent Publication 2008-068345 publications.
In addition, recently in roughing tool, there is the situation of the cutting tip using triangle.Because, triangle
Cutting tip in the case where being positive angle-style, compared with the cutting tip of conventional quadrangle, the number of corners that can use many 1
It is individual, it is economical.But, the feeding along with instrument axial direction is being carried out with the roughing tool of the cutting tip using triangle
Machining（Oblique processing etc.）In the case of, if the arrangement for the cutting tip being set to as disclosed in patent document 1,
The problem of producing following such.In the case of the cutting tip of triangle, the inner edge used in oblique processing etc. forms master
A part for cutting edge.So-called " inner edge ", refers in common infeed not function and make when as oblique process
The cutting edge that instrument is also used when tool shaft is to upper feeding.Generally, in the state of cutting tip is assembled on tool body,
It is located at the opposite side in the side with being connected to comer cutting edge of the front cutting edge participated in cutting.
Thus, in the cutting tip of least significant end of roughing tool is assemblied in, the cutting edge part of only a part both by
Use, also used as " main cutting edge " as " inner edge ".Therefore, in the arrangement described in patent document 1, it is being used for
Very big load is acted on the cutting edge part of both, it is possible to become easily from the segmental defect.The problem is not limited
, all may production in the cutting tip whole for using a part for main cutting edge as inner edge in the cutting tip of triangle
It is raw.
The content of the invention
The invention that the present invention is in view of the above problems and made, it is therefore an objective to which a kind of cutter head of the form of roughing tool is provided
Replaceable cutting element a, even if part of the bit replacing formula cutting element assembling with wavy cutting edge and main cutting edge
The cutting tip of structure that is also used as inner edge of cutting edge part, can also suppress the damage of the cutting edge part.
The present invention is a kind of bit replacing formula rotary cutting tool（10）, the bit replacing formula rotary cutting tool（10）Tool
There is tool body（20）And cutting tip（30）, the tool body（20）With Pivot axle（O）, and in generally cylindrical shaped,
The cutting tip（30）It is assemblied in the tool body（20）On, in aforementioned tools body（20）Outer peripheral face（23）On be formed with it is multiple
Groove（27）, in the groove（27）Inside it is formed with multiple blade bearings（28）, foregoing cutting tip（30）Configure foregoing to disassembly ease
Blade bearing（27）On, foregoing cutting tip（30）With rake face（31）With with the rake face（31）The rear knife face intersected（33）,
In foregoing rake face（31）With foregoing rear knife face（33）Intersection ridge line section, be formed with main cutting edge（34）And the main cutting edge
（34）The comer cutting edge of connection（37）And with the comer cutting edge（37）The front cutting edge of connection（35）；Foregoing main cutting edge
（34）From with foregoing rake face（31）Opposed direction observation, is formed as wavy；Foregoing cutting tip（30）It is configured to, foregoing
Bit replacing formula rotary cutting tool（10）Around foregoing Pivot axle（O）During rotation, each foregoing cutting tip（30）'s
Foregoing main cutting edge（34）In the rotational trajectory of formation, in 1 aforementioned grooves（27）It is inherent along foregoing Pivot axle（O）Side
Upward adjacent foregoing cutting tip（30）The phase of the ripple of the rotational trajectory of formation is consistent, also, at least one of foregoing
Cutting tip（30）It is configured to, foregoing main cutting edge（34）The cutting edge part by a part in the rotational trajectory of formation is formed
Rotational trajectory each other in foregoing Pivot axle（O）Overlapped on direction.
According to the present invention, the cutting tip with wavy main cutting edge is being used（30）Bit replacing formula rotary cutting
Instrument（10）In, adjacent cutting tip（30）The above-mentioned a part of cutting edge part for the main cutting edge having forms identical
Rotational trajectory, so the cutting load of each sword is all mitigated.Thus, even the part thereof of cutting edge portion of main cutting edge
Divide the structure also used as inner edge, also can significantly suppress the defect of the cutting edge part.
Brief description of the drawings
Fig. 1 is the stereogram of an embodiment of the bit replacing formula rotary cutting tool of the present invention.
Fig. 2 is the side view of Fig. 1 bit replacing formula rotary cutting tool.
Fig. 3 is the side view of the tool body used in an embodiment of the bit replacing formula rotary cutting tool of the present invention
Figure.
Fig. 4 is the top view from base end side by Fig. 3 tool body.
Fig. 5 is the upward view from end side by Fig. 3 tool body.
Fig. 6 is the vertical of the cutting tip that is used in an embodiment of the bit replacing formula rotary cutting tool of the present invention
Body figure.
Fig. 7 is the top view of Fig. 6 cutting tip.
Fig. 8 is to illustrate the wavy main cutting on the whole cutting tips arranged in 1 groove of Fig. 3 tool body
The rotational trajectory of sword and instrument direction of rotation some angular position by from positioned at most lean on end side cutting tip in place
In the figure of the rotational trajectory projective representation of 5 cutting tips of the cutting tip for most leaning on terminus position.
Fig. 9 is to put Fig. 8 part IX to illustrate the overlapping of the rotational trajectory of adjacent cutting tip in 1 groove
The figure represented greatly.
Figure 10 is to put Fig. 8 part X to illustrate the overlapping of the rotational trajectory of cutting tip adjacent in the circumferential
The figure represented greatly.
Embodiment
Hereinafter, embodiments of the present invention are explained referring to the drawings.In addition, in the following description, using
The situation of term as " on ", " under ", "front", "rear", but these are become easily and used in order that understanding, are not
Limit critical position relationship and the present invention in space.
The bit replacing formula rotary cutting tool 10 of present embodiment as shown in Figures 1 and 2, substantially by with multiple knives
The tool body 20 of the substantially cylindrical shape of bar 28 and the multiple cutting tips 30 being assemblied on these blade bearings 28 are constituted.Also have
The bit replacing formula rotary cutting tool 10 of present embodiment is referred to as to the situation of roughing tool.
On tool body 20, as shown in Figures 3 to 5, with what is be made up of the 1st end face 21, the 2nd end face 22 and outer peripheral face 23
Drum, the 1st end face 21 has circular shape, and the 2nd end face 22 is opposite to the 1st end face 21 and configured, and tool
There is the circular shape same with the 1st end face 21, the outer peripheral face 23 will be connected between these end faces 21,22.Tool body 20
With the central point and the Pivot axle O of the central point of the 2nd end face 22 through the 1st end face 21.Using Pivot axle O as base
Standard, bit replacing formula rotary cutting tool 10 rotates.1st end face 21 is disposed on the end face of the base end side of tool body 20, also referred to as
Make cardinal extremity face.Here, the base end side of so-called tool body 20, refers to the side for being assemblied in work mechanism.2nd end face 22 is disposed on
The end face of the end side of tool body 20, also referred to as terminal surface.Here, the end side of so-called tool body 20, refers to and machined object
Close side.
On tool body 20, provided with the through hole 24 formed from the 1st end face 21 to the 2nd end face 22 along Pivot axle O,
With the multiple cooling agent supply holes 25 flowed for cooling agent.In through hole 24, installation bolt is inserted, the installation bolt is being incited somebody to action
Tool body 20 is used when being fixed to the heart axle of work mechanism.On the 1st end face 21, the opening portion, cold of through hole 24 is formed with
But the opening portion of agent supply hole 25 and for from the main shaft of work mechanism transmit power keyway 26.In addition, in the 2nd end face 22
On, it is formed with the opening portion of through hole 24 and because of the breach for setting blade bearing 28 to bring.
On the outer peripheral face 23 of tool body 20, between the 1st end face 21 and the 2nd end face 22, spirally it is formed with multiple
Groove 27.Groove 27 is formed as, and from base end side towards end side, is reversed in the terminal surface observation of tool body 20 around counterclockwise.Groove 27 from
The vicinity of 1st end face 21 of tool body 20, reaches that the 2nd end face 22 stops.In the present embodiment, the quantity of groove 27 is 4, but
This is not limited to, as long as provided with more than 1.In groove 27 towards in the region in front of instrument direction of rotation, it is formed with
Multiple blade bearings 28.In the present embodiment, blade bearing 28 is provided with 5 in every 1 bar groove 27, but is not limited to this, as long as
Provided with two or more.On the other hand, in the region in the direction of groove 27 direction opposite with instrument direction of rotation, provided with use
Multiple cooling agent ejiction openings 29 that cooling agent is sprayed.Cooling agent ejiction opening 29 is communicated to cooling agent supply hole 25.Cooling agent
Quantity of ejiction opening 29 and cooling agent supply hole 25 and configuration position etc. can with view of demand cooling performance etc. and suitably change.
Here, observed in the side of tool body 20, in same groove 27, by positioned at the blade bearing for most leaning on tool tip side
28 are defined as the 1st section, and next blade bearing 28 is defined as into the 2nd section, and its next blade bearing 28 is defined as into the 3rd section, and its is next
Blade bearing 28 is defined as the 4th section, most the blade bearing 28 of base end side will be leaned on to be defined as the 5th section（Uppermost）.
As shown in figure 3, blade bearing 28 is substantially by the lower surface with cutting tip 30（Take a seat face）32 bottom surfaces abutted
281 and the outer peripheral face with cutting tip 30（Containment surfaces）33 two sides 282 abutted are constituted.The bottom surface 281 of blade bearing has
The shape substantially same with the face 32 of taking a seat of the cutting tip 30 of installation.In this case, its shape is substantially
Triangle, but it is not limited to this.In addition, the substantially central portion in bottom surface 281, provided with for by cutting tip 30 by for example
The mode of screw threads for fastening is fixed to the fixing hole 283 on blade bearing 28.That is, the fixing hole 283 shown in Fig. 3, which is simplified, to be showed,
But it is formed with negative thread on the inner surface of actual fixing hole 283.Bottom surface 281 and the shape of side 282 on blade bearing 28
Shape or their position relationship, with can suitably be changed in the relation of the shape of the cutting tip of assembling etc..
The cutting tip 30 used in the present embodiment as shown in FIG. 6 and 7, substantially by upper surface 31, lower surface
32 and outer peripheral face 33 constitute, the basic outer contour shape of the upper surface 31 is substantially regular triangle shape, the lower surface
32, which are opposite to upper surface 31, is configured, and in general triangular shape, upper surface 31 is connected by the outer peripheral face 33 with lower surface 32.
In more detail, it is that the line segment being substantially orthogonal by the side with side cuts away such shape near vertex of a triangle, so upper table
Face 31 alternatively have by long leg point alternately intersect with short side part formed by 120 ° of rotationally symmetrical hexagons
Shape.Upper surface 31 is acute angle with the angulation of outer peripheral face 33, and lower surface 32 is obtuse angle with the angulation of outer peripheral face 33.Cause
And, the cutting tip 30 is so-called positive angle-style.Upper surface 31 as rake face function, outer peripheral face 33 as rear knife face or
Containment surfaces function, lower surface 32 is used as face function of taking a seat.In addition, with by upper surface 31 and lower surface 32 substantially in
The mode of insertion is entreated to be provided with mounting hole 36.
Also, cutting edge is formed with a part for crest line with intersecting for outer peripheral face 33 in upper surface 31.Specifically, exist
Main cutting edge 34 is formed with long leg point, front cutting edge 35 is formed with short side part, in long leg point and short side part
The corner part intersected to approximate right angle is formed with comer cutting edge 37.Thus, the cutting tip 30 of present embodiment have 3 by
The group that main cutting edge 34, front cutting edge 35 and comer cutting edge 37 are constituted, so by rotating 120 ° and reinstalling to blade
Group on seat 28, so as to use cutting edge successively, can carry out 3 machinings with 1 cutting tip 30.
But, the shape and structure of the cutting tip 30 used in the bit replacing formula rotary cutting tool 10 of the present invention
This is not limited to, can as needed and suitably be changed.For example, it is also possible to be upper surface 31 and lower surface 32 relative to periphery
Face 33 is with the cutting tip of the negative angle type of 90 ° of intersections.In the case, upper and lower surface is made to the shape of congruence, if under
Also cutting edge is formed on surface 32, then can carry out adding up to the machining of 6 times by inverting upper and lower surface to use.This
Outside, basic outer contour shape can also be other polygons such as quadrangle or pentagon.
Vertical view of the main cutting edge 34 in cutting tip 30（Fig. 7）In be formed as wavy.Here so-called " wavy ", refers to
In the vertical view of cutting tip 30, the shape that foreign side's curved cutting edge part 341 is alternately connected with interior side's curved cutting edge part 342
Shape, foreign side's curved cutting edge part 341 towards cutting tip 30 foreign side with arc-shaped bend, the interior side bending cutting
Blade portion 342 towards cutting tip 30 interior side with arc-shaped bend.But, all parts of ripple are it is not absolutely required to all by justifying
Bowing portion is constituted, for example, can also be that a part is formed as linear shape.In the present embodiment, main cutting edge 34
Be formed as wavy throughout its total length, in sinusoidal wave shape.Also imitate the part of the outer peripheral face 33 adjacent with the wavy main cutting edge 34
Shape is formed as wavy in main cutting edge 34.In such wavy cutting edge, the substantially only part on mountain（Foreign side's bending cutting
Blade portion 341）Participate in cutting, so cutting swarf is by slightly disjunction.Further, since a part for only cutting edge is participated in
In cutting, so cutting resistance can be reduced.Therefore, be suitable for roughing tool it is such, because cutting-in is larger and cutting swarf
The instrument that discharge rate is more and cutting resistance is higher.
As described above, in the cutting tip 30 of present embodiment, along the main cutting edge 34 on each side of triangle, turn
Angle cutting edge 37 and front cutting edge 35 are so that this is linked in sequence and is constituted 1 group.Thus, the front cutting edge 35 in some group with it is adjacent
Other main cutting edge 34 in group is connected.The connection of front cutting edge 35 and other main cutting edge 34 in adjacent sets in some group
Portion A1 and its periphery also serve as the function of inner edge 38.So-called " inner edge ", is in common infeed（It is orthogonal with tool shaft
Plane in feeding）In not function and as it is oblique processing instrument is also used when tool shaft is to upper feeding
Cutting edge.Generally, in the state of cutting tip 30 is assembled on tool body as shown in Figure 1, it is being installed on most end
Set on the cutting tip of side and participate in cutting it is front cutting edge 35, be located at and be connected to the one of comer cutting edge 37
The part of the opposite side in side forms inner edge 38.
In the present embodiment, as shown in fig. 7, inner edge 38 can be formed be from some group front cutting edge 35 with it is adjacent
The tie point A1 of the main cutting edge 34 of group extends the cutting edge part of certain length to the direction of main cutting edge 34.That is, master cuts
Cut being located in foreign side's curved cutting edge part 341 of sword 34 and most lean on end（Tie point A1）Foreign side's curved cutting edge part of side
351 be nearby the part for also serving as inner edge function.In addition, having in foreign side's curved cutting edge part 351 most by end
There are following such shapes：The position most protruded outward in vertical view forms the tie point A1 with front cutting edge 35, i.e., on mountain
Highest place（The place of the half on mountain）The shape of end.
In addition, in the cutting tip 30 of present embodiment, land 39 is formed with throughout whole cutting edges 34,35,37,
But its width and angle are simultaneously non-constant.From the central point C of main cutting edge 34 to the both ends of main cutting edge 34（That is, with adjacent sets
Front cutting edge 35 tie point A1 and tie point A2 with identical group of comer cutting edge 37）Front, margin width and land
Angle is constant.Specifically, a width of 0.15mm of land, margin angle is 5 °.On the other hand, in main cutting edge 34, from than each
The ground that individual tie point A1, A2 are slightly proximal to central point C sides is lighted, margin width and margin angle change.I.e., in this region, therefrom
Entreat point C sides towards tie point A1, A2, change in the way of margin width broadens, margin angle diminishes.Also, in tie point A1, A2
Place, margin width becomes most wide, and margin angle becomes minimum.Specifically, at tie point A1, A2, a width of 0.2mm of land, land
Angle is 0 °.The land 39 of comer cutting edge 37 and front cutting edge 35 is throughout its total length, and connecting portion A1, A2 with main cutting edge 34
The margin width and margin angle at place are identical.Thus, a width of 0.2mm of land of front cutting edge 35 and main cutting edge 34, margin angle is 0 °.
Such cutting tip 30 is assemblied on the blade bearing 28 of tool body 20 by fixed screw element 40.Now, bite
The lower surface 32 of piece 30 is abutted with the bottom surface 281 of blade bearing 28.In addition, the side of the outer peripheral face 33 of cutting tip 30 and blade bearing 28
Face 282 is abutted.Now, cutting tip 30 is assembled as shown in Figure 2 so that outer peripheral face 23 of the main cutting edge 34 in tool body 20
Side is configured with the position relationship parallel with outer peripheral face 23, and front cutting edge 35 is in the end surface side of tool body 20 with parallel with terminal surface
Position relationship configuration.Cutting tip 30, can also be by chock or fastening gasket etc. in addition to by fixed screw element 40
It is fixed.But, if mounting hole 36 is made into the structure that its both ends expands diameter than central portion, so that fixed screw element 40
Head be connected on the step part formed by the enlarged-diameter portion of mounting hole and fixed on tool body 20, then can by
Prominent thrust is eliminated in groove 27.Thus, the discharge of cutting swarf is improved.
The cutting edge 34,35,37 of cutting tip 30 can make of following hard materials：Hard alloy, cermet, pottery
Porcelain, the material that they are implemented with coating or ultra-high pressure sintering body containing diamond or cubic boron nitride, to containing a cube nitrogen
The ultra-high pressure sintering body for changing boron implements material of coating etc..Part beyond the cutting edge 34,35,37 of cutting tip 30 is also excellent
Made from same hard material.
In the present embodiment, every 1 bar groove 27 is equipped with 5 cutting tips 30.Now, tool tip side is most being leaned in configuration
The 1st section of cutting tip 30 the side that participates in machined object of main cutting edge 34 machining in, front cutting edge 35 is joined
With in the machining to the bottom surface of machined object, comer cutting edge 37 is participated in the machining in the corner of machined object.
In contrast, in the 2nd section to the 5th section of cutting tip 30, main cutting edge 34 is participated in the cutting of the side of machined object,
But front cutting edge 35 and comer cutting edge 37 are not involved in cutting.That is, the secondary cutting of the 2nd section to the 5th section of cutting tip 30
Sword 35 and comer cutting edge 37 are configured to, and the rotational trajectory of the main cutting edge 34 of cutting tip 30 corresponding unlike in other grooves is dashed forward
Go out.
In addition, each cutting tip 30 is in the side view of tool body 20, it is heavy on Pivot axle O directions in 1 groove 27
Configure foldedly.In more detail, the main cutting edge 34 of cutting tip 30 adjacent in 1 groove is each other in Pivot axle O directions
On cutting position overlap.As shown in Fig. 2 because blade bearing 28 is formed as stepped in spiral helicine groove 27, so can
Carry out the configuration of overlapping cutting tip 30.
So, cutting tip 30 be configured to it is overlapping last point of Pivot axle O directions in 1 groove 27, it is specific and
Structure of the speech with following such characteristic.
Fig. 8 represents some angular position in instrument direction of rotation by from positioned at most leaning on the cutting tip of end side in place
The state projected in the rotational trajectory 301~305 of 5 cutting tips of the cutting tip for most leaning on terminus position.As shown in figure 8,
It is when the bit replacing formula rotary cutting tool 10 of present embodiment rotates around Pivot axle O from front, by each
During the rotational trajectory of the formation of main cutting edge 34 of cutting tip 30, cutting tip 30 is matched somebody with somebody with being overlapped on Pivot axle O directions
Put so that the phase of the ripple of the rotational trajectory 301~305 of the adjacent formation of cutting tip 30 is consistent.That is, it is configured to, by cutting
The ripple of the rotational trajectory of the formation of main cutting edge 34 of blade 30 is continuous between adjacent cutting tip 30.
In the present embodiment, as shown in by Fig. 9 of Fig. 8 part IX amplifications, cutting tip 30 is configured to, in each groove
In 27, the rotational trajectory that only main cutting edge 34 is formed（It is the rotation that the 2nd section and the 3rd section of cutting tip is formed respectively in fig .9
Track 302 and 303）In, by the rotation that is formed of foreign side's curved cutting edge part 341 most by end side positioned at main cutting edge 34
Mark of going through transition is overlapped on Pivot axle O directions each other.This more precisely, be located relatively at end side cutting tip it is outer
The rotational trajectory of square curved cutting edge part 351 and the cutting tip that is located relatively at base end side are connected with comer cutting edge
The relation of the rotational trajectory of foreign side's curved cutting edge part 341.In addition, this is in the present embodiment, in whole grooves 27, close
In whole adjacent mutual relations of cutting tip 30 be all same.
And then, in the groove 27 mutual relation circumferentially-adjacent along instrument, it is configured to, by the rotational trajectory of cutting element 10
The phase of ripple stagger on instrument rotary shaft O directions and configure cutting tip 30 so that when making the rotation rail of whole grooves 27
When mark is overlapped, the phase of the ripple of the mutual rotational trajectory of groove 27 is inconsistent.That is, as shown in by Figure 10 of Fig. 8 part X amplifications,
In relation between the 1st section of the cutting tip most by end side positioned at circumferentially adjacent groove 27, relative to solid line
The rotational trajectory 301 of expression, the phase of the ripple of the rotational trajectory being represented by dashed line of circumferentially adjacent cutting tip is staggered.
Then, the functions and effects to the bit replacing formula rotary cutting tool 10 of present embodiment are illustrated.
As the bit replacing formula rotary cutting tool 10 of present embodiment, cutting tip 30 has to be formed in vertical view
For wavy main cutting edge 34, cutting tip 30 is configured to, and is revolved in bit replacing formula rotary cutting tool 10 around Pivot axle O
In the rotational trajectory of when turning, each cutting tip 30 main cutting edge 34 formation, along Pivot axle in 1 groove 27
The phase of the ripple of the rotational trajectory of adjacent cutting tip 30 formation is consistent on O direction；And at least a portion cutting tip
30 are configured to, and rotational trajectory in the rotational trajectory of the formation of main cutting edge 34, a part of cutting edge part is formed is each other in rotation
Turn to overlap on central axial O, by such structure, following effect can be obtained.
The rotation that the phase of the wavy rotational trajectory of adjacent cutting tip 30 is consistent and a part of cutting edge part is formed
Transition mark coincides with one another, in the present embodiment, and refer to be located at least in main cutting edge 34 most leans on end（Tie point A1）Side
Foreign side's curved cutting edge part 341 is overlapping in the circumferential each other.In the cutting tip 30 of present embodiment, main cutting edge 34
Foreign side's curved cutting edge part 351 can be used as the function of inner edge 38.Therefore, it is being configured at the bite of tool tip side
In piece 30, only its foreign side's curved cutting edge part 351 is used for the cutting twice of the side and bottom surface relative to machined object
Processing.That is, foreign side's curved cutting edge part 351 is used as main cutting edge 34, is also used as inner edge 38.
Thus, easily act on excessive load on foreign side's curved cutting edge part 351 and cause damage, but by adopting
With structure as the present embodiment, the situation can be suppressed.Because, corresponding with foreign side's curved cutting edge part 351
Direction of rotation region in, with other cutting edge portion split-phase ratios, sword number is at double.That is, foreign side's curved cutting edge part 351 is attached
Vicinity closely with foreign side's curved cutting edge part 341 of the end of adjacent cutting tip is overlapped, and is set on tool body 20
Have 4 bar grooves, thus relative in the region of the direction of rotation corresponding with other cutting edge parts in main cutting edge 34 with 4
Sword is cut, with being cut in the region of the corresponding direction of rotation in foreign side's curved cutting edge part 351 of coincidence with 8 swords.Therefore,
In this region, each sword to cut thickness thinning, so cutting load is significantly mitigated.So, it will be cut to being used for 2 times
The burden of foreign side's curved cutting edge part 341 significantly mitigate, thus, it is possible to significantly inhibit the portion that inner edge 38 is used that also serves as
The defect of position.
In the present embodiment, cutting tip 30 overlaps configuration on Pivot axle O directions so that only main cutting edge 34
The foreign side's curved cutting edge part 341 in the rotational trajectory of formation, positioned at main cutting edge 34 for most leaning on end side（I.e., relatively
Positioned at foreign side's curved cutting edge part 351 corresponding with inner edge 38 of the cutting tip of end side and it is located relatively at base end side
The foreign side's curved cutting edge part 341 being connected with comer cutting edge of cutting tip）The rotational trajectory of formation is consistent with each other, but simultaneously
It is not limited to this.That is, can also be configured to, the rotational trajectory formed from the multiple foreign side's curved cutting edge parts 341 of end number that
This is overlapping.But, in order that the overall cutting-in of instrument is maximized, preferably it is configured to, only most partly overlapping by end side.
In addition, in the present embodiment, being configured to, in whole grooves 27, whole adjacent cutting tips 30 are each other
Overlap, but be not limited to this.Even that is, with the groove 27 of a part, a part of adjacent cutting tip 30 weighs each other
The structure that the mode of conjunction is configured, also can somewhat realize the effect for the defect for suppressing foreign side's curved cutting edge part 351.
But, in order that defect inhibition is maximized, preferably it is configured to, in whole grooves 27, whole adjacent cuttings
Blade 30 coincides with one another.Foreign side's curved cutting edge part 351 is simply positioned in least significant end as the function of inner edge 38
Cutting tip 30, but because, when the overall cutting tip of instrument is replaced simultaneously, least significant end will be positioned in originally
Cutting tip replacing of the cutting tip with being positioned in base end side originally is used.
In addition, one another, being configured to along the circumferentially-adjacent groove 27 of instrument, the phase of the ripple of rotational trajectory is revolved in instrument
Rotating shaft O staggers on direction and configures cutting tip 30 so that when make whole grooves 27 rotational trajectory overlap when, aforementioned grooves 27 that
The phase of the ripple of this rotational trajectory is inconsistent.Thus, the wavy rotation rail of the main cutting edge 34 when overlapping whole grooves 27
The mountain part of mark and the difference of height of valley point reduce, so cutting residual quantity is cut in caused by valley point, chip being cut part adds
The surface roughness in work face improves.
In addition, being formed with whole main cutting edges 34, front cutting edge 35 and the comer cutting edge 37 of cutting tip 30
Land 39, is configured to, the tie point A1 of main cutting edge 34 and front cutting edge 35 margin width than the central point C of main cutting edge 34 at
Land it is roomy, and tie point A1 margin angle is smaller than the margin angle that central point C locates.By so constituting, can make with it is interior
The part of the corresponding main cutting edge 34 of sword 38（Foreign side's curved cutting edge part 351）Intensity improve, can further suppress scarce
Damage.
In addition, the phase shifting of the ripple of rotational trajectory is matched somebody with somebody on instrument rotary shaft O directions each other in foregoing groove 27
In the structure put, the bottom surface at first with machined object of inner edge 38 of the cutting tip 30 of the instrument least significant end of each groove 27 is only located at
Contact, so the sword number participated in this condition in cutting tails off.For example, in whole grooves 27, positioned at most by instrument end
The region equivalent to inner edge 38 of the cutting tip 30 of side is 1 sword, its next cutting tip 30 positioned at tool tip side
The region equivalent to inner edge 38 be two panels sword, its next cutting tip 30 positioned at tool tip side equivalent to inner edge 38
Region is 3 swords.Thus, the cutting resistance acted on inner edge 38 becomes than common, i.e. next positioned at instrument relative to its
It is big during 4 swords in the region equivalent to inner edge 38 of the cutting tip 30 of end side, so land is strengthened as described above
Scheme be effective.Meanwhile, in the other parts of main cutting edge 34（The part not used twice in cutting）In, make land
39 maintain cutting ability for sharp original state.
And then, the margin width and margin angle of front cutting edge 35 are preferably margin width and margin angle phase with tie point A1
Deng.Because, by so constituting, in groove 27 as described above each other on instrument rotary shaft O directions by rotational trajectory
The intensity of the phase shifting of ripple and the front cutting edge 35 that can act on larger load in the structure that configures is improved.
The cutting tip 30 used in the present invention is not limited in vertical view have triangular shaped structure.That is,
As long as the cutting tip 30 for the structure that the cutting edge part of a part for main cutting edge 34 is also used as inner edge 38, also may be used
To apply other shapes.
More than, to the present invention representational embodiment be illustrated, but the present invention can carry out it is various
Change, without departing from the purport of the invention and technical scope defined by claims hereof, it becomes possible to be replaced,
Change.
Claims (7)
1. a kind of bit replacing formula rotary cutting tool（10）, the bit replacing formula rotary cutting tool（10）With tool body
（20）And cutting tip（30）, the tool body（20）With Pivot axle（O）, and in generally cylindrical shaped, the cutting
Blade（30）It is assemblied in the tool body（20）On, in aforementioned tools body（20）Outer peripheral face（23）On be formed with multiple grooves（27）,
In the groove（27）Inside it is formed with multiple blade bearings（28）, foregoing cutting tip（30）Configure to disassembly ease in previous insert seat
（28）On, it is characterised in that
Foregoing cutting tip（30）With rake face（31）With with the rake face（31）The rear knife face intersected（33）, in foregoing preceding knife
Face（31）With foregoing rear knife face（33）Intersection ridge line section, be formed with main cutting edge（34）And the main cutting edge（34）Connection
Comer cutting edge（37）And with the comer cutting edge（37）The front cutting edge of connection（35）；
Foregoing main cutting edge（34）From with foregoing rake face（31）Opposed direction observation, is formed as wavy；
Foregoing cutting tip（30）It is configured to, in foregoing bit replacing formula rotary cutting tool（10）Around foregoing Pivot axle
（O）During rotation, each foregoing cutting tip（30）Foregoing main cutting edge（34）It is foregoing at 1 in the rotational trajectory of formation
Groove（27）It is inherent along foregoing Pivot axle（O）Direction on adjacent foregoing cutting tip（30）The rotational trajectory of formation
The phase of ripple is consistent, also, at least one of foregoing cutting tip（30）It is configured to, foregoing main cutting edge（34）The rotation of formation
The rotational trajectory formed by the cutting edge part of a part in transition mark is each other in foregoing Pivot axle（O）Weight on direction
Close,
Foregoing main cutting edge（34）From with foregoing rake face（31）Opposed direction observation, is formed as with multiple curved towards foreign side
Bent foreign side's curved cutting edge part（341）It is wavy,
Aforesaid plurality of foreign side's curved cutting edge part（341）In, in foregoing main cutting edge（34）End and and aforementioned auxiliary
Cutting edge（35）Foreign side's curved cutting edge part of connection（351）Also it is used as inner edge（38）Use.
2. bit replacing formula rotary cutting tool as claimed in claim 1（10）, it is characterised in that
In each aforementioned grooves（27）In, foregoing at least one of cutting tip（30）It is configured to, only foregoing main cutting edge（34）
In the rotational trajectory of formation by positioned at foregoing main cutting edge（34）Most lean on end side foreign side's curved cutting edge part（341）
The rotational trajectory of formation is each other in foregoing Pivot axle（O）Overlapped on direction.
3. bit replacing formula rotary cutting tool as claimed in claim 1（10）, it is characterised in that
In whole aforementioned grooves（27）In, whole adjacent foregoing cutting tips（30）It is configured to, the rotation rail of aforesaid end
Mark is each other in foregoing Pivot axle（O）Overlapped on direction.
4. bit replacing formula rotary cutting tool as claimed in claim 1（10）, it is characterised in that
It is being configured in aforementioned tools body（20）Circumference on adjacent aforementioned grooves（27）Foregoing cutting tip rotational trajectory
In mutual relation, it is configured to, makes the phase of ripple of the rotational trajectory in Pivot axle（O）Stagger on direction and configure foregoing
Cutting tip（30）So that when making whole aforementioned grooves（27）Rotational trajectory overlap when, aforementioned grooves（27）Mutual rotation rail
The phase of the ripple of mark is inconsistent.
5. bit replacing formula rotary cutting tool as claimed in claim 1（10）, it is characterised in that
In foregoing cutting tip（30）Foregoing front cutting edge（35）On, it is connected to remove foregoing main cutting edge（34）Outside in addition
Main cutting edge（34）；
In whole foregoing main cutting edges（34）, foregoing front cutting edge（35）And foregoing comer cutting edge（37）On be formed with land
（39）；
Foregoing other main cutting edge（34）With foregoing front cutting edge（35）Tie point（A1）The margin width master more other than this
Cutting edge（34）Central point（C）The land at place is roomy；
Foregoing other main cutting edge（34）With foregoing front cutting edge（35）Tie point（A1）The margin angle master more other than this
Cutting edge（34）Central point（C）The margin angle at place is small.
6. bit replacing formula rotary cutting tool as claimed in claim 5（10）, it is characterised in that
Foregoing front cutting edge（35）Margin width and margin angle and said connector（A1）Margin width and margin angle it is equal.
7. bit replacing formula rotary cutting tool as claimed in claim 1（10）, it is characterised in that
Foregoing cutting tip（30）From with foregoing rake face（31）Opposed direction observation, with general triangular shape.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014143780 | 2014-07-14 | ||
| JP2014-143780 | 2014-07-14 | ||
| PCT/JP2015/070057 WO2016009995A1 (en) | 2014-07-14 | 2015-07-13 | Replaceable edge-type rotating cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105813785A CN105813785A (en) | 2016-07-27 |
| CN105813785B true CN105813785B (en) | 2017-08-18 |
Family
ID=55078487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580003184.XA Active CN105813785B (en) | 2014-07-14 | 2015-07-13 | Bit replacing formula rotary cutting tool |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10124423B2 (en) |
| EP (1) | EP3147057B1 (en) |
| JP (1) | JP6011831B2 (en) |
| CN (1) | CN105813785B (en) |
| WO (1) | WO2016009995A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10556278B2 (en) * | 2016-08-16 | 2020-02-11 | Kennametal Inc. | Tool body for a shell end mill and cutting tool |
| CN106862618B (en) * | 2016-12-30 | 2019-12-13 | 株洲钻石切削刀具股份有限公司 | Drilling machining tool |
| CN106825719B (en) * | 2016-12-30 | 2019-12-06 | 株洲钻石切削刀具股份有限公司 | Cutting insert |
| CN107234285B (en) * | 2017-05-17 | 2020-07-17 | 贺州学院 | Formed milling cutter and manufacturing method thereof |
| CN112108697B (en) | 2019-06-20 | 2024-08-06 | 肯纳金属印度有限公司 | Tool holder with pockets for receiving cutting inserts having different clearance angles |
| US11806796B2 (en) * | 2021-03-15 | 2023-11-07 | Kennametal Inc. | Cutting insert and cutting tool comprising cutting insert |
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| EP0278389A3 (en) * | 1987-02-06 | 1990-03-21 | Ingersoll Maschinen Und Werkzeuge Gesellschaft Mit Beschränkter Haftung | Cutting insert for a milling tool, and a milling tool equipped with a such an insert |
| CN101326026A (en) * | 2006-04-21 | 2008-12-17 | 韩国养志园有限公司 | Sinusoidal angled rotary cutting tool |
| CN101511514A (en) * | 2006-09-13 | 2009-08-19 | 三菱麻铁里亚尔株式会社 | Insert for roughing and roughing end mill |
| JP2013202770A (en) * | 2012-03-29 | 2013-10-07 | Mitsubishi Materials Corp | Blade edge replaceable end mill and end mill main body used for the same |
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| US4936719A (en) | 1976-08-24 | 1990-06-26 | Greenleaf Corporation | Cutter and indexable on edge inserts with aligned corners and staggered serrated edges |
| JPH0135777Y2 (en) * | 1985-05-25 | 1989-11-01 | ||
| US4844666A (en) * | 1986-08-22 | 1989-07-04 | Izumo Industrial Co., Ltd. | Insert rotary cutting tool |
| CA2062213C (en) * | 1992-03-03 | 1996-07-16 | Alfonso Minicozzi | Indexable cutting insert for rotary cutting tools |
| US5542792A (en) * | 1993-12-21 | 1996-08-06 | Waukesha Cutting Tools, Inc. | Cutting device with removable nosepiece |
| JPH0839308A (en) * | 1994-07-26 | 1996-02-13 | Mitsubishi Materials Corp | Throwaway tip |
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2015
- 2015-07-13 JP JP2015543211A patent/JP6011831B2/en active Active
- 2015-07-13 US US15/312,755 patent/US10124423B2/en active Active
- 2015-07-13 EP EP15821813.1A patent/EP3147057B1/en active Active
- 2015-07-13 CN CN201580003184.XA patent/CN105813785B/en active Active
- 2015-07-13 WO PCT/JP2015/070057 patent/WO2016009995A1/en active Application Filing
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| EP0278389A3 (en) * | 1987-02-06 | 1990-03-21 | Ingersoll Maschinen Und Werkzeuge Gesellschaft Mit Beschränkter Haftung | Cutting insert for a milling tool, and a milling tool equipped with a such an insert |
| CN101326026A (en) * | 2006-04-21 | 2008-12-17 | 韩国养志园有限公司 | Sinusoidal angled rotary cutting tool |
| CN101511514A (en) * | 2006-09-13 | 2009-08-19 | 三菱麻铁里亚尔株式会社 | Insert for roughing and roughing end mill |
| JP2013202770A (en) * | 2012-03-29 | 2013-10-07 | Mitsubishi Materials Corp | Blade edge replaceable end mill and end mill main body used for the same |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3147057A1 (en) | 2017-03-29 |
| CN105813785A (en) | 2016-07-27 |
| JPWO2016009995A1 (en) | 2017-04-27 |
| JP6011831B2 (en) | 2016-10-19 |
| EP3147057B1 (en) | 2022-03-02 |
| WO2016009995A1 (en) | 2016-01-21 |
| EP3147057A4 (en) | 2017-09-13 |
| US10124423B2 (en) | 2018-11-13 |
| US20170189974A1 (en) | 2017-07-06 |
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